import time
def metric(fn):
    def int_time(*args, **kwargs):
        start_time=time.time()
        fn()
        end_time=time.time()
        print("%s executed, " %(fn.__name__),'耗时：{:.4f}s'.format(end_time - start_time))
    return int_time

@metric
def circul():
   list=[(i-1)*j for i in range(200) for j in range(100)]
   print(list)

if __name__ == '__main__':
    circul()